Method for deeper penetrating acidizing of siliceous formations
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United States of America Patent
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Oct 30, 1984
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N/A
app pub date -
Jul 28, 1983
filing date -
Jul 28, 1983
priority date (Note) -
Expired
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Abstract
A method for acidizing siliceous subterranean formations wherein the acidizing composition penetrates the formation to a greater extent before spending comprising injecting into the formation first an organosilane or an ester of an organosilane, preferably in a hydrocarbon carrier liquid, and thereafter an aqueous acidizing composition containing (1) a non-oxidizing mineral acid, acid precursor, low molecular weight organic acid or halogenated derivative thereof, and (2) a fluorine-containing acid or salt.
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